{"schema_version":"secwatch.filing_event.v1","accession":"0001171843-21-005790","form_type":"8-K","ticker":"NTIC","cik":"0000875582","company_name":"NORTHERN TECHNOLOGIES INTERNATIONAL CORP","filed_at":"2021-08-10T23:59:59+00:00","discovered_at":"2026-05-14T18:04:21.024191+00:00","generated_at":"2026-06-29T17:40:33.161365+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.4,"calibrated_materiality_score":0.4,"confidence":"high","headline":"Director Soo-Keong Koh resigns from board for health reasons","bullets":["Soo-Keong Koh resigned from the Board of Directors effective August 10, 2021.","Resignation due to personal health reasons, not related to any disagreement with the Company.","No replacement for Koh has been announced or discussed in the filing."],"urls":{"canonical":"https://secwatch.observer/filing/0001171843-21-005790","json":"https://secwatch.observer/filing/0001171843-21-005790.json","markdown":"https://secwatch.observer/filing/0001171843-21-005790.md","text":"https://secwatch.observer/filing/0001171843-21-005790.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/875582/000117184321005790/0001171843-21-005790-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/875582/000117184321005790/f8k_081021.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-29T17:40:33.161365+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[{"claim_id":"0efe922f7f","claim":"Soo-Keong Koh resigned as Director at NORTHERN TECHNOLOGIES INTERNATIONAL CORP.","evidence_excerpt":"On August 10, 2021, Soo-Keong Koh, a member of the Board of Directors (the “Board”) of Northern Technologies International Corporation (the “Company”), resigned as a Board member, effective immediately.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/875582/000117184321005790/0001171843-21-005790-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}